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Case 35 - Congenital Myasthenic Syndromes (CMS): Dok7
from Disorders of the Neuromuscular Junction
Jessica E. Hoogendijk, University Medical Center Utrecht, Marianne de Visser, Amsterdam University Medical Center, Pieter A. van Doorn, Erasmus MC, University Medical Center, Rotterdam, Erik H. Niks, Leiden University Medical Center
Book:

Neuromuscular Disease

Published online:

29 November 2024

Print publication:

19 December 2024, pp 168-171
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Summary

A 7-year-old girl visited the outpatient clinic because of difficulty walking. She had never managed to run properly, and experienced frequent falls ever since she began walking independently at the age of 18 months. Jumping was not possible, and when stepping up or down, she needed support below her arms. There was no fluctuation of symptoms during the day, but she had suffered from periods that could last several weeks in which using the stairs was completely impossible. She was unable to blow up a balloon and her speech was slow and poorly articulated. There were no complaints about chewing or swallowing. She had a healthy non-identical twin sister and the family history was unremarkable.